Halide Engineering in Low‐Dimensional Perovskites (BA) 2 PbX 4 (X═Cl, Br, I): Insights Into Structural and Optical Properties for Optoelectronic Applications
2D Ruddlesden‐Popper perovskites exhibit strong excitonic behavior, but their performance is simultaneously governed by exciton‐phonon coupling and lattice dynamics. Here, we investigate the halide‐dependent lattice dynamics and its influence on exciton behavior in butylammonium‐based low‐dimensional perovskites, B...